.logo {
  float: left;
  width: 100px;
  height: 50px;
  margin: 5px 24px 5px 0;
  background: url(https://z3.ax1x.com/2021/06/23/Rmh0nH.png) no-repeat center center;
  background-size: 100% 100%;
}
.header {
  background: #fff !important;
  z-index: 999 !important;
}
